198395418 has 32 divisors (see below), whose sum is σ = 432129600. Its totient is φ = 60356736.

The previous prime is 198395387. The next prime is 198395453. The reversal of 198395418 is 814593891.

198395418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7348 + ... + 21231.

It is an arithmetic number, because the mean of its divisors is an integer number (13504050).

Almost surely, 2^198395418 is an apocalyptic number.

198395418 is an abundant number, since it is smaller than the sum of its proper divisors (233734182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198395418 is a wasteful number, since it uses less digits than its factorization.

198395418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28686.

The product of its digits is 311040, while the sum is 48.

The square root of 198395418 is about 14085.2908383178. The cubic root of 198395418 is about 583.2354043680.

The spelling of 198395418 in words is "one hundred ninety-eight million, three hundred ninety-five thousand, four hundred eighteen".